collectCoordinates(componentCoordinates);
    }

    public Provider<ModuleMetadataSpec> build() {
        return variants().map(variants -> new ModuleMetadataSpec(identity(), variants, publication.isPublishBuildId()));
    }

    private ModuleMetadataSpec.Identity identity() {

        List<ModuleMetadataSpec.Variant> variants = metadata.variants;
        if (variants.isEmpty()) {
            return;
        }
        writeArray("variants", () -> {
            for (ModuleMetadataSpec.Variant variant : variants) {
                if (variant instanceof ModuleMetadataSpec.LocalVariant) {
                    ModuleMetadataSpec.LocalVariant local = (ModuleMetadataSpec.LocalVariant) variant;

            final Try<ModuleMetadataSpec> moduleMetadataSpec;

            public Ready(Try<ModuleMetadataSpec> moduleMetadataSpec) {
                this.moduleMetadataSpec = moduleMetadataSpec;
            }
        }

        static class ComponentMissing extends InputState {
            final String publicationName;

            public ComponentMissing(String publicationName) {

        InvalidPublicationChecker checker = new InvalidPublicationChecker(publication.getName(), ':task', [] as Set)
        ModuleMetadataSpec spec = new ModuleMetadataSpecBuilder(
            publication,
            publications,
            checker,
            resolverFactory
        ).build().get()
        checker.validate()